Tire of wheels of vehicles.



J. CAIRNS. TIRE OF WHEELS 0P VEHICLES. APPLICATION FILED AUG. 18, 1909.

' v e Z 4 I 5- ii "W' Patented N0 v. 15, 1910.

UNITE TATE PATENT JOHN CAIRNS, 0F WILLENHALL, ENGLAND.

TIRE OF WHEELS OF VEHICLES.

To all whom it may concern:

Be it known that 1, JOHN CAIRNS, late of Birmingham street, now of\Valsall Road, Willenhall, South Staffs, England, mechanic, haveinvented certain new and useful Improvements in and Connected with theTires of lVheels of Vehicles, of which the following is a specification.

This invention relates to that class of tires wherein the tread portionis formed by a plurality of yielding studs.

The invention has for its object the provision of an improved form ofstud and also an improved form of mounting therefor.

The invention will be more fully described in connection with theaccompanying drawing and will be more particularly pointed out andascertained in and by the appended claims.

In the drawing :-Figure 1 is a view in side elevation of a wheelprovided with studs arranged thereon in accordance with one embodimentof my invention. Fig. 2 is a view in side elevation of one of the studsdetached. Fig. 3 is a cross-sectional View on line 33 of Fig. 4:,showing the manner in which the stud is mounted. Fig. 4 is a plan viewof a portion of the rim of the wheel.

Like characters of reference designate similar parts throughout thedifferent figures of the drawing.

As shown in the drawing the invention is illustrated in connection witha wheel de signed for light weight vehicles. The rim a is provided withan annular head a which merges into supporting sections a Lateral andannular flanges a project radially outwardly from the supportingsections a and for side walls between which the stud holding parts areanchored. The side walls a are connected by one or more transverse partitions a Within the lateral walls a and lying against the partitions (1are rectangular holders 6 provided with side flanges b and end flanges 6The end flanges b are bolted as at g to the transverse partitions a. Theholders 1) constitute shell receptacles supported on the supportingportions a and fitting within the wall a" of the rim (1 for receivingthe shells to which the studs are secured.

Specification of Letters latent.

Original application filed July 29, 1908, Serial No. 446,005.

itatented Nov. 15, 191%.

Divided and this application filed August 18,

Serial No. 513,441.

As shown the shells are indicated at o and are of circular formationhaving bottom walls 0 and a vertical side wall 0 having its upper margina bent inwardly to form an engaging flange. The flange c and bottomwalls 0 form a circular cavity or space for receiving a stud.Conveniently the shells are shown as riveted, at f, to the flat bottomsof the holders 6, the rivets being centrally disposed with respect tothe shells.

Studs e are hollow and are provided with conical upper portions 6, thetruncated portion 6 thereof forming the tread. The lower portion 0 iscylindrical and is provided with an annular groove or recess e toreceive the flange 0 The base portion 6 is raised in proportion toproject into and fill the space beneath the flange 6 so as to hold thestuds in place and also to prevent entrance of water and egress of airto and from the interior of the studs, respectively. The base portion 6is slightly reduced in diameter with respect to the portion 0 toaccommodate for the thickness of the walls 0 Owing to the hollowconstruction of the studs the base portions c may be sprung into placebeneath the flange c by collapsing the stud and subsequently allowingthe same to expand or spread so as to lock the base portions 6 beneaththe flange c in a manner to confine the air within the studs and form aneffective cushion. While it will be understood that the stud does notform, with the shell, an air tight chamber, it will be clearly seen thategress or ingress of the air to and from the interior of the stud canonly take place slowly whereupon it will be seen that a substantial aircushion is provided.

I claim 1. A vehicle wheel tire structure comprising in combination, aplurality of hollow studs of solid yielding material each provided withan annular groove near its base, a plurality of circular shellsreceiving the bases of said studs and having flanges engaging thegrooves therein for securing said studs and confining air therein, and arim supporting said shells.

2. A vehicle wheel tire structure comprising in combination, a pluralityof hollow studs of solid yielding material each pro- Vided With anannular groove near its base, of said holder, and means securing the enda circular shell receiving the base of each flanges of said holders tosaid partition. 10 stud and provided With a flange engaging In testimonywhereof I aflix my signature the groove thereof for securing said studin presence of two Witnesses.

and confining air therein holders provided JOHN CAIRNS. with end andslde flanges to which said WV1tnesses: shells are secured, a rnnprovided with side JAMES GLENN,

flanges and a partition engaging the flanges I GABRIEL L. SQUIRE.

